Comparison

iTorsion vs Nabla Assistant Mobile

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iTorsion

This medical app simplifies diagnosing ocular torsion using just a smartphone and red/green glasses. It offers greater precision than traditional methods, providing extorsion and intorsion measurements for each eye after a patient test.

Highlights
  • Ocular torsion diagnosis
  • Smartphone-based testing
  • Red/green glasses compatibility
  • Precise measurement
  • Extorsion and intorsion calculation
  • Customizable color values
Features
Read full description

iTorsion seeks to make the diagnosis of ocular torsion a simpler and easier process for both doctors and their patients. While traditional diagnostic methods require using special equipment (e.g., Double Maddox Rod) that often lacks precision, iTorsion only requires a smartphone and red/green glasses leading to much greater precision. This application is intended for use by doctors, and not for self-diagnosis by patients. Usage of the application will require standard red-green glasses to filter out colors from each eye. The specific color values can be tailored in the app to fit the specific requirements for the display and the glasses. The smartphone should be held on a level surface as the patient interacts with it. The patient should see predominantly one of the lines out of each eye, and will be asked to make the lines parallel with each other, as well as to the ground. After finishing the test, a screen will indicate the degree of extorsion and intorsion for each of the patient’s eyes.

About

Nabla Assistant Mobile

This app assists healthcare practitioners by transcribing consultations in real-time. It then generates a concise summary with a single click, streamlining the documentation process for in-person appointments.

Highlights
  • Real-time consultation transcription
  • One-click summary generation
  • Assists healthcare practitioners
  • Supports in-person consultations
  • Streamlines documentation
Read full description

Like a medical scribe, Nabla helps you as a healthcare practitioner transcribe your consultations in real-time and generate a summary in one click. It works for in-person consultation.

Screenshots

iTorsion3 screens
Nabla Assistant Mobile4 screens

Verdict

The call

The clearest difference is review sentiment: iTorsion at 100% against Nabla Assistant Mobile's 50%. iTorsion also leads on rating (5.0 vs 3.9) and iOS requirement (10.3 vs 15.6). Nabla Assistant Mobile's advantage is update cadence (weekly vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iTorsion holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 6 and 8 respectively. Written reviews point the same way: 100% of iTorsion's written reviews are positive against 50% of Nabla Assistant Mobile's.

UpkeepUpdate frequency

iTorsion ships an update every 3 months, Nabla Assistant Mobile weekly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
iTorsion versus Nabla Assistant Mobile: the parameters behind the verdict, then further details
ParameteriTorsionNabla Assistant Mobile
PriceFreeFree
Rating5.0 (6 ratings) — better3.9 (8 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings68 — better
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS10.3 — better15.6
Further details — not scored
Size17 MB24 MB
Age rating17+4+
DeveloperRegents of the University of MinnesotaNabla Technologies

Customer experience

iTorsion

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Nabla Assistant Mobile

All ratings8 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

iTorsion

No in-app purchases

None

Nabla Assistant Mobile

No in-app purchases

Questions

Is iTorsion free?
iTorsion is free to download, with no in-app purchases.
Is Nabla Assistant Mobile free?
Nabla Assistant Mobile is free to download, with no in-app purchases.
Which has better reviews, iTorsion or Nabla Assistant Mobile?
iTorsion is rated higher. iTorsion averages 5.0 out of 5 from 6 ratings, while Nabla Assistant Mobile averages 3.9 from 8 ratings.
Do iTorsion or Nabla Assistant Mobile have ads?
Neither iTorsion nor Nabla Assistant Mobile shows ads.
Which is updated more often, iTorsion or Nabla Assistant Mobile?
iTorsion ships an update every 3 months, and Nabla Assistant Mobile weekly. Most recently, iTorsion was updated on November 2, 2026 and Nabla Assistant Mobile on October 30, 2026.

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